Ceramic-metal composite substrate and method for producing the s

Details Ceramic-metal composite substrate and method for producing the s Ceramic-metal composite substrate and method for producing the s

1991-11-07

1993-10-12

Ramsey, Kenneth J.

Metal fusion bonding

Process

Metal to nonmetal with separate metallic filler

228194, B23K 2002

Patent

active

052518035

ABSTRACT:
A method for producing a ceramic-metal composite substrate, which comprises integrally bonding together a ceramic base member, metal members of a material selected from the group consisting of copper and alloys thereof, and a constraining member to be bonded to the metal member, wherein improvement comprises: bringing the metal member into close contact with ceramic base member through a thin film layer having a thickness of from 0.1 .mu.m to 3 .mu.m and containing therein an active metal; and heating the combination of the ceramic base member, the metal member, and the constraining member in an atmosphere which is difficult to react with the active metal, to a temperature ranging from a melting point of an alloy to be formed of the metal member and the active metal to a temperature below the melting point of the metal member, while applying a pressing force to combination in the direction of its thickness, thereby realizing the integral bonding.

REFERENCES:
patent: 3795041 (1974-03-01), Hennicke et al.
patent: 3915369 (1975-10-01), Schmidt-Bruecken
patent: 3994430 (1976-11-01), Cusano et al.
patent: 4735866 (1988-04-01), Moorhead
patent: 4901904 (1990-02-01), Tsuno
German journal Metall, 41st year, vol. 11, pp. 1108-1115.
German journal Metalloberfrache, 40 (1986) 8, p. 348.

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